Agitating and separating mixtures of solid matter and liquids.



J. T. GARRICK.

AGITATING AND SEPARATING MIXTURES 0P SOLID MATTER AND LIQUIDS.

' APPLICATION FILED JUNE 13,1908.

91 2,541 Patented Feb. 16, 1909.

w/ r/vEsse-(s STATES PATENT orrron JAuEs TAYLOR GARRIOK, or JoHAs'xEsBURe, TRAXSVAAL, ASSIGNOR OF ONE-HALF "r'o BASIL STUART PATTISON, or JOHANNESBURG, TRANSVAAL.

AGITATING AND SEPARATING MIXTURES OF SOLID MATTER 'AND LIQUIDS.

Specification of Letters Patent.

Patented Feb. 16, 1909.

Application filed June 13, 1908. Serial No. 438,392.

To all whom it may concern:

Be it known that I, JAMES TAYLOR OAR.- RICK, eologist, a subject of the King of Great Iitain, residing at the New Club, Johannesburg, Transvaal, have invented new and useful Improvements in Agitating and Separating Mixtures of Solid Matter and Liquids, of which the following is a specification.

The present invention relates to the agitation of solid matter with liquid and their subsequent separation; and it is herein descnbed as applied to the process of cuprous matte treatment which involves the steps of digesting the matte in acid, collecting the evolved sulfureted hydrogen for use as fuel, and the filtration of the digester liquor from the solid residues preparatory to their further treatment for the recovery of their valuable constituents. I

The accom anying drawing is a diagrammatic view 0 apparatus for carrying out the which may be connected by means of the phere. Such fan is arranged to force the gas or air under pressure to a series of pipes m cock Z either to the pipe f or to the atmosarranged in proximity to the filter medium b. From these pipes it is ejected througha large number of orifices n preferably directed more or less towards the filter b so that the issuing jets impinge thereon as indicated by the arrows.

In cases, such as the process of matte treatment referred to, where heat is required to bring about the requisite chemical operations steam pipes o are arranged within'the stantia the supply pipe 7c of- Letters Patent is:

evolved gas into the same,

From the pipe I llecl crushed matte and closed up, acid is fed in through pipe u and the temperature raised to the required point by injecting steam through the orifices 19, such injection also serving to preliminarily agitate the mass. Thereafter as gas is evolved, the necessary amount thereof is forced back by fan 5* through the orifices n so as to keep the whole contents of the vessel in a state of agitation. When the digestion of the matte is completed and the evolution of gas subvl ceases, the injection of the gas is sto ped and the gas remaining above the liqui is driven off through valve t by means of steam supplied through the branch 1'. There remains in the vat a close and heav precipitate of on rous sulfid which is di cult to filter o by the usual methods. Packing of this precipitate is however revented by injectin air through the or ces n by means of the Tan 7' during the time that the cock cl is opened for draining off the liquor, and thereby keeping the surf-ace of the filter bclear.

What I claim, and desire to secure by 1. The

process which consists in treating matte wit a suitable liquid to generate gas and agitating the mass during digestion by injecting thereinto the necessary quantities of said evolved gas under pressure.

2. The

1process which consists in treating matte wit a suitable liquid to generate gas,

agitating the mass during digestion by in- I jecting the necessary. quantity of said and subsequently drawing off the liquid through a filter medium while maintaining the mass in proximity to the filter in a state of agitation y means of gaseous jets.

3-. The .process of treating matte which. name to thi specification in the presence cf consiislts in mi xing the matte with acid, rais-v two subscribing Witnesses. in t e temperature of t e mixture collect- I in: the evolved gas and returning the neces- JAMES TAYLOR CARRICK' 5 sary quantity of the same under pressure to Witnes;ses:

agitate the mixture of matte and acid. WM: HILLMAN VINCENT,

In testimony whereof I have signed my ALFRED L. S2003. 

